CVE-2026-104591 Osmocom CVE debrief

Who should care

Defenders responsible for systems using libosmocore, especially those with remote access, should assess exposure and prioritize patching. This includes reviewing system configurations, monitoring for potential attacks, and verifying the integrity of affected systems. The vulnerability's impact on system availability and security necessitates prompt action from defenders to ensure the resilience of their systems and 3

Why it matters

A buffer overflow vulnerability in libosmocore could allow remote attackers to cause denial of service attacks, requiring defenders to verify and apply patches, review system configurations, and monitor for potential attacks.

• Potential denial of service attacks
• Need for verification of system configurations and patch levels
• Potential impact on system availability

Technical summary

The osmo_iuup_compute_payload_crc() function in libosmocore through 1.14.1 is vulnerable to a buffer overflow attack, which can be exploited by remote attackers to cause a denial of service. Defenders should focus on verifying and applying patches, reviewing system configurations for potential exposure, and monitoring for potential denial of service attacks. The technical details of the vulnerability indicate a need for immediate attention to prevent potential operational disruptions.

Defensive priority

Defenders should prioritize verifying and applying patches for libosmocore, especially in systems where remote access is possible.

Recommended defensive actions

• Verify and apply patches for libosmocore
• Review system configurations for potential exposure
• Monitor for potential denial of service attacks

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the full scope of affected systems and potential impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.